Buffer for store-service apparatus



No. 452,474. Patented May 19, 1891.

Q lnnnlnub UNITE STATES PATENT OFFI THEODORE P. FARMER, OF BOSTON, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE LAMSON CONSOLIDATED STORE SERVICE COM- PANY, OF NEVV JERSEY.

BUFFER FOR STORE-SERVICE APPARATUS.

SPECIFICATION forming part of Letters Patent No. 452,474, dated May 19, 1891.

Application filed February 19, 1885. Serial No. 156,427. (No model.)

To all whom it may OOHOW against the coil-spring D, while the enlarge Be it known that I, THEODORE P. FARMER, ment y on the extension d, by contact with of Boston, in the county of Suffolk and State the closed end of the cylinder A, limits the of Massachusetts, have invented new and useforward movement of the part 0.

5 ful Improvements in Store-Service Buffers, of The part A is clamped to the wire by means which the following, taken in connect-ion with of the split nipple j and a conical sleeve 70, the accompanying drawings, is a specification. whiclnwhen carried from the end of the nip- My invention relates to that class of storeple, causes the jaws thereof to bite the wire, service apparatus in which the carriers travel the sleeve 7t constituting a tapering nut and 10 upon ways consisting of wires stretched bethe nipple j being conical and threaded, so tween the termini; and my invention conthat its jaws will be compressed by screwing sists in certain improvements in what are the nut away from the end. usually termed the buffers or bumpers, The device constructed as above described fully setforth hereinafter, wherebythe motion is mounted upon the wire and the carrier is I 5 of the carriers is gradually arrested without provided with any suitable catch X, having 6' noise or injurious jars or strains and the rean inclined end or shoulder, which engages bound of the carriers is prevented. with any shouldertupon the butferfor in- In the drawings, Figure l is a plan View of stance, with the shoulder ac-and as the latter my invention, showing the same applied to a is annular the engagement of the catch there- 20 wire. Fig.2 is alongitudinal section thereof. with is insured, even where the carrier ar- The improved buffer consists, essentially, rives at the termination of its travel in an of three parts-a part A, which is secured to inclined position, as frequently happens, owthe wire B, a part 0, which slides upon the ing to the swinging of the carriage 9n the wire, andaspringD,interposed between these wire during its movement. The end of the 25 parts in such a manner as to tend to separate catch first strikes against the front face of them-the said parts being so constructed or the part C and then the shoulder of the catch connected that the loose part has only a limis stopped by the shoulder 00, the spring D ited movement in respect to the fixed part, yielding sufficiently to prevent too sudden and the said loose part being provided with an arrest of the carriers movement, but grad- 0 a circular or annular shoulder for insuring ually stopping the same, thereby avoiding the the engagement of the buffer with a hook of undue jolting and straining of the carrier. the carrier whatever may be the position of To prevent noise from the contact of the the latter. catch with the part C, the face of the latter is The part A is perforated for the passage of covered with an elastic material I), as leather,

5 the wire and is provided with the clampingrubber, felt, &c., and to prevent noise on the nipple j, by means of which it can be secured rebound a similar material I)" is interposed in any position on the wire to which it is to be between the bearings which make. contact adjusted, and the part C is provided with a when the spring throws the part C outward. neck e, terminating in a conical head f, form- The buffer above described serves effectu- 0 ing an annular shoulder co, the whole being ally to arrest the sudden movement of the perforated, so as to slide upon the wire, and carrier without noise or objectionable jars or the spring D is interposed between the parts strains, the movement being absorbed and ar- A and C. rested by the spring and extension of one part The separation of the two parts A and C is of the buffer through the other, and the use 5 prevented by the extension of one part into of the enlargement y limits the movement of 5 or through the other and by a shoulder or one part in respect to the other longitudinally. bearing limiting the movements of the loose Having thus described my invention, what portions, as by the tubular extension (1 of I claim is the part C, sliding in the socket of the part The combination, with a wireway, of a split 50 A, formed by the cylinder A, and bearing threaded nipple thereon,aconical sleeve upon to:

the said nipple, a block secured to the forward the said cylinder between the enlargement on end of the said sleeve, a cylinder having a the tubular extension and the said block, as closed forward end surrounding the said way described. and having its rear end secured to the said In testimony whereof I have signed my 5 block, a conical head having a tubular rearname to this specification in the presence of I 5 ward extension surrounding the Way and two subscribing Witnesses.

having an annular shoulder at the base of its THEODORE P. FARMER. cone,an enlargement at the rear of the tubular \Vitnesses: extension contained in the said cylinder, and AMBROSE EASTMAN,

[O a spring surrounding the said way and Within J AMES R. POWERS. 

